AT519805A3 - Length adjustable connecting rod for a piston engine - Google Patents

Length adjustable connecting rod for a piston engine Download PDF

Info

Publication number
AT519805A3
AT519805A3 ATA50304/2018A AT503042018A AT519805A3 AT 519805 A3 AT519805 A3 AT 519805A3 AT 503042018 A AT503042018 A AT 503042018A AT 519805 A3 AT519805 A3 AT 519805A3
Authority
AT
Austria
Prior art keywords
connecting rod
piston
cylinder
hydraulic pressure
piston engine
Prior art date
Application number
ATA50304/2018A
Other languages
German (de)
Other versions
AT519805A2 (en
AT519805B1 (en
Inventor
Kai Arens Dr
Original Assignee
Avl List Gmbh
Iwis Motorsysteme Gmbh & Co Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Avl List Gmbh, Iwis Motorsysteme Gmbh & Co Kg filed Critical Avl List Gmbh
Publication of AT519805A2 publication Critical patent/AT519805A2/en
Publication of AT519805A3 publication Critical patent/AT519805A3/en
Application granted granted Critical
Publication of AT519805B1 publication Critical patent/AT519805B1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
    • F02B75/045—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable connecting rod length
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
    • F16C7/06—Adjustable connecting-rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/003—Systems with load-holding valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/12—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action
    • F15B11/121—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions
    • F15B11/126—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions by means of actuators of the standard type with special circuit controlling means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/31552—Directional control characterised by the connections of the valve or valves in the circuit being connected to an output member and a return line
    • F15B2211/31558—Directional control characterised by the connections of the valve or valves in the circuit being connected to an output member and a return line having a single output member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/72—Output members, e.g. hydraulic motors or cylinders or control therefor having locking means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

Die Erfindung bezieht sich auf ein längenverstellbares Pleuel (1) für einen Kolbenmotor, mit ei- nem der Kurbelwelle zugeordneten ersten Pleuelabschnitt (2) und einem dem Motorkolben zuge- ordneten zweiten Pleuelabschnitt (4), wobei in einem Pleuelabschnitt ein Zylinder (3) ausgebildet ist, während der andere Pleuelabschnitt mit einem Kolben (5) versehen ist, der in dem Zylinder (3) verschiebbar angeordnet ist und entsprechend seiner Stellung in dem Zylinder (3) mindestens eine hydraulische Druckkammer (10, 11) begrenzt. Damit das Pleuel (1) neben einer kurzen und einer langen Pleuellänge auch Zwischenstellungen einnehmen kann, sieht die Erfindung vor, dass die hydraulischen Druckkammern (10, 11) über je ein Ablaufventil (16) verriegelbar sind, so dass der Kolben eine Mittelstellung einnehmen kann, in der er zwei hydraulische Druckkammern (10, 11) begrenzt.The invention relates to a length-adjustable connecting rod (1) for a piston engine, having a first connecting rod section (2) associated with the crankshaft and a second connecting rod section (4) assigned to the engine piston, wherein a cylinder (3) is formed in a connecting rod section is, while the other connecting rod portion is provided with a piston (5) which is slidably disposed in the cylinder (3) and according to its position in the cylinder (3) at least one hydraulic pressure chamber (10, 11) limited. Thus, the connecting rod (1) can take intermediate positions in addition to a short and a long rod length, the invention provides that the hydraulic pressure chambers (10, 11) via a drain valve (16) can be locked, so that the piston can assume a central position in which it limits two hydraulic pressure chambers (10, 11).

ATA50304/2018A 2017-04-10 2018-04-10 Length-adjustable connecting rod for a piston engine AT519805B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017107731.6A DE102017107731A1 (en) 2017-04-10 2017-04-10 Length adjustable connecting rod for a piston engine

Publications (3)

Publication Number Publication Date
AT519805A2 AT519805A2 (en) 2018-10-15
AT519805A3 true AT519805A3 (en) 2019-02-15
AT519805B1 AT519805B1 (en) 2020-02-15

Family

ID=62063480

Family Applications (1)

Application Number Title Priority Date Filing Date
ATA50304/2018A AT519805B1 (en) 2017-04-10 2018-04-10 Length-adjustable connecting rod for a piston engine

Country Status (4)

Country Link
CN (1) CN110582625B (en)
AT (1) AT519805B1 (en)
DE (1) DE102017107731A1 (en)
WO (1) WO2018188793A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT522793B1 (en) * 2019-10-08 2021-02-15 Avl List Gmbh Compact hydraulic valve mechanism for a length-adjustable connecting rod
AT522570B1 (en) * 2019-10-08 2020-12-15 Avl List Gmbh Hydraulic valve mechanism with throttle bore
CN113250819A (en) * 2021-06-11 2021-08-13 刘平 Device for transmitting power by using straight rod piston seven-wheel transmission mechanism and application thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012020999A1 (en) * 2012-07-30 2014-01-30 Fev Gmbh Hydraulic freewheel for variable engine parts
WO2015055582A2 (en) * 2013-10-18 2015-04-23 Avl List Gmbh Length-adjustable connecting rod
WO2016203043A1 (en) * 2015-06-18 2016-12-22 Avl List Gmbh Length-adjustable connecting rod
WO2017102108A1 (en) * 2015-12-14 2017-06-22 Avl List Gmbh Length-adjustable connecting rod with electromagnetically-actuatable switching valve
WO2017207070A1 (en) * 2016-05-31 2017-12-07 Avl List Gmbh Longitudinally adjustable connecting rod comprising a hydraulically actuated control device and an electromagnetically actuated switching valve, reciprocating piston engine, and vehicle

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2161580B (en) * 1984-07-07 1987-08-12 Peter Robert Davis Variable length connecting rod
US5255637A (en) * 1992-04-30 1993-10-26 Ford Motor Company Internal combustion engine with adaptive control of compression ratio
WO2014162043A1 (en) * 2013-04-03 2014-10-09 Wärtsilä Finland Oy Arrangement for setting a compression ratio of an internal combustion piston engine
DE102013107127A1 (en) * 2013-07-05 2015-01-08 Hilite Germany Gmbh Connecting rod for a two-stage variable compression
AT515419B1 (en) * 2014-05-12 2015-09-15 Imt C Innovative Motorfahrzeuge Und Technologie Cooperation Gmbh Connecting rod for an internal combustion engine
DE102015203387A1 (en) * 2015-02-25 2016-08-25 Fev Gmbh Double-acting piston of a VCR engine
EP3334915B1 (en) * 2015-08-10 2020-06-03 AVL List GmbH Reciprocating piston engine, in particular internal combustion engine
DE102016215282A1 (en) * 2015-08-14 2017-02-16 Avl List Gmbh Length adjustable connecting rod
CN205477932U (en) * 2016-03-16 2016-08-17 吉林大学 Hydraulic drive formula variable compression ratio piston link assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012020999A1 (en) * 2012-07-30 2014-01-30 Fev Gmbh Hydraulic freewheel for variable engine parts
WO2015055582A2 (en) * 2013-10-18 2015-04-23 Avl List Gmbh Length-adjustable connecting rod
WO2016203043A1 (en) * 2015-06-18 2016-12-22 Avl List Gmbh Length-adjustable connecting rod
WO2017102108A1 (en) * 2015-12-14 2017-06-22 Avl List Gmbh Length-adjustable connecting rod with electromagnetically-actuatable switching valve
WO2017207070A1 (en) * 2016-05-31 2017-12-07 Avl List Gmbh Longitudinally adjustable connecting rod comprising a hydraulically actuated control device and an electromagnetically actuated switching valve, reciprocating piston engine, and vehicle

Also Published As

Publication number Publication date
WO2018188793A1 (en) 2018-10-18
AT519805A2 (en) 2018-10-15
AT519805B1 (en) 2020-02-15
CN110582625B (en) 2021-10-29
CN110582625A (en) 2019-12-17
DE102017107731A1 (en) 2018-10-11

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MM01 Lapse because of not paying annual fees

Effective date: 20230410